Use the setting circled in this ss!It helps you change it to dark or light and many other day time settings!
Also download this tool used to help you tell what the enviroments look like and terrains!It will show you what each enviroment setting looks as sky night,day, or whatever and pick the enviroment file that shows what u want!
http://www.novahq.net/?show=utilitie...et_file&id=332
For Example if there was an eviroment file named cmr56-a and it was night say and the one i wanted id go to DFX MED and scroll down to that enviroment under enviroments!
